Home / 2,947.00-4,066.95-1,620.80

Finding the Fourth Proportional to 2,947.00, 4,066.95 and 1,620.80

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Solution

The fourth proportional to 2,947.00, 4,066.95 and 1,620.80 is: 2,236.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.00 : 4,066.95 = 1,620.80 : x
  2. Step 2: Convert to fraction form
    2,947.00/4,066.95 = 1,620.80/x
  3. Step 3: Cross multiply
    2,947.00x = 4,066.95 × 1,620.80
  4. Step 4: Simplify right side
    2,947.00x = 6,591,712.56
  5. Step 5: Solve for x
    x = 6,591,712.56/2,947.00
  6. Step 6: Final answer
    x = 2,236.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.